MESON Chess Problem Database

Problem Display
PID: 174064 (8/3bNpp1/2N1kbrR/1P6/K1P2QP1/3pn2B/2p1q2n/4R3 w - - 0 1)

Boorer, PA

British Chess Magazine, 1938

8/3bNpp1/2N1kbrR/1P6/K1P2QP1/3pn2B/2p1q2n/4R3

#2

10 + 11

15202 Componist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Qe5#
    • 1...Bh4
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bg5
      • 2.Qe5#
    • 1...Bxe7
      • 2.Sd4#
      • 2.Qe5#
    • 1...Sd5
      • 2.cxd5#
    • 1...Sf5
      • 2.gxf5#
  • Tries
    • 1.Qe4+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kd6!
  • Keys
    • 1.c5!
      • threat
        • 2.Qd6#
      • 1...Qxg4
        • 2.Qc4#
      • 1...Rxg4
        • 2.Qe4#
      • 1...Bxe7
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sc4
        • 2.Qxc4#
        • 2.Qf5#
      • 1...Sf5
        • 2.Qc4#
        • 2.Qxf5#
        • 2.gxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(h);P_SPINB(g),P_SPINR(h),XP(F)::QAR1(E)
    • B(g);N_GUARD,P_SPINR(h)::QAR1(E)
    • B(g);N_GUARD,P_SPINR(h)::QAR1(E),XB(g)
    • S(e);OGATE,P_SPINQ(b)::P(D),XS(e)
    • S(e);OGATE,P_SPINQ(b)::P(F),XS(e)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g),P_SPINR(h)::QAR1(E),XB(g)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • P(D);
    • Threat
      • QAR1(E)
    • Vars
      • Q(b);P_PINQ(E),P_SPINQ(b),P_SPINS(e),XP(F)::QAB(E)
      • R(h);P_PINQ(E),P_SPINB(g),P_SPINR(h),XP(F)::QAR2(E)
      • B(g);N_GUARD,P_SPINR(h),XS(J)::QAR1(E)
      • B(g);N_GUARD,P_SPINR(h)::QAR1(E),XB(g)
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